Solve x − 2y = 6
3x − 6y = 18

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths